EvtPropFlatte.hh

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#ifndef EVT_PROP_FLATTE_HH
#define EVT_PROP_FLATTE_HH

#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtPropagator.hh"

// Flatte propagator: S.M.Flatte, Phys. Lett. B63, 224 (1976)

class EvtPropFlatte : public EvtPropagator {
  public:
    EvtPropFlatte( double m0, double g0, double m0a, double m0b, double g1,
                   double m1a, double m1b );

    EvtAmplitude<EvtPoint1D>* clone() const override;

  protected:
    EvtComplex amplitude( const EvtPoint1D& x ) const override;

    double _m0a;
    double _m0b;

    double _g1;
    double _m1a;
    double _m1b;
};

#endif